- All sections
- G - Physics
- G03G - Electrography; electrophotography; magnetography
- G03G 21/00 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
Patent holdings for IPC class G03G 21/00
Total number of patents in this class: 2943
10-year publication summary
|
255
|
231
|
284
|
233
|
256
|
215
|
241
|
200
|
146
|
30
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36856 |
469 |
| Kyocera Document Solutions Inc. | 5761 |
299 |
| Ricoh Company, Ltd. | 14053 |
287 |
| Brother Industries, Ltd. | 13284 |
273 |
| Hewlett-Packard Development Company, L.P. | 29751 |
207 |
| FUJIFILM Business Innovation Corp. | 7579 |
173 |
| Konica Minolta, Inc. | 8205 |
145 |
| Canon Kabushiki Kaisha | 6683 |
144 |
| Toshiba TEC Corporation | 3902 |
97 |
| Toshiba Corporation | 12033 |
87 |
| Xerox Corporation | 6811 |
65 |
| Sharp Corporation | 11048 |
65 |
| Konica Minolta Business Technologies, Inc. | 1726 |
62 |
| Brother Kogyo Kabushikikaisha | 1657 |
61 |
| HP Indigo B.V. | 580 |
51 |
| Lexmark International, Inc. | 1966 |
45 |
| Oki Electric Industry Co., Ltd. | 1736 |
28 |
| Sharp Kabushiki Kaisha | 18962 |
27 |
| Sumitomo Riko Company Limited | 892 |
21 |
| Seiko Epson Corporation | 19240 |
19 |
| Other owners | 318 |